Problem with board antenna in nRF9151-DK.

[oscargomezf]

Hi,

I am trying to use the nRF915-DK with a GNSS Tracker application. Everything works fine, but, I am not able to set the nRF9151-DK properly for utilizing the board GNSS antenna.

What CONFIGs defines I have to use in prj.conf file If I want to use BOARD antenna? and, What are the right ones to use external antenna?

Best regards,

Óscar.

[oscargomezf]

When I tried this set up:

# Use onboard antena with COEX0 by default:

CONFIG_MODEM_ANTENNA_GNSS_ONBOARD=n
CONFIG_MODEM_ANTENNA_GNSS_EXTERNAL=y

The GNSS works perfectly, but when I use this set up:

# Use onboard antena with COEX0 by default
CONFIG_MODEM_ANTENNA_GNSS_ONBOARD=y
CONFIG_MODEM_ANTENNA_GNSS_EXTERNAL=n

With the nRF9151-DK in clear sky with direct line of sight to satellites, I am not able to get a fix.

Does anyone any suggestion?

[Michal]

I will check that internally.

If you have the AT command interface on as well (or maybe can try to turn it on) you could check with the AT%COEX0? command.

Best regards,

Michal

[Michal]

Sorry, I forgot to ask: which NCS and Modem FW versions are you using?

Best regards,

Michal

[oscargomezf]

Hi Michal,

Thank you for your support.

Modem FW version: nrf91x1_2.0.2

Best regards,

Óscar.